UPDATE (08/13/17): A new version of the packs have been uploaded (please check the first post of this thread). Unfortunately, the event-based grouping has been abandoned since MTGDecks.net stopped providing that information in the .dec format metadata. The new packs contain a total of 215825 supported decks, 51598 AI-playable decks, 88894 AI-playable decks with several cards that are played relatively well by the AI but are marked as "not AI-playable", and 1971 partially supported decks with at least 1 unsupported card.

UPDATE (10/15/17): A new version of the packs have been uploaded (please check the first post of this thread). The new packs contain a total of 223424 supported decks, 86461 AI-playable decks, 116027 AI-playable decks with several cards that are played relatively well by the AI but are marked as "not AI-playable", and 2131 partially supported decks with at least 1 unsupported card.

IMPORTANT: You should notice the significant increase in the number of AI-playable decks in this release (by over 35000 decks compared to the previous release for both AI packs). This is because in the recent SVN nightlies of Forge, many older cards have been updated and are now marked as AI playable. You need a recent SVN version of Forge in order for those decks to be fully AI-compatible, in particular, you need the revision 36031 or newer, at least until Forge v1.6.5 is officially released. Note that the latest Forge for Android v1.6.4.003 is fully compliant with this pack. If you're using Forge v1.6.4 or an older SVN build, you may receive a warning about AI-unplayable cards when using some of these decks, and you may also have certain playability problems related to those cards.

Ayssia wrote:I wonder if there's a way to delete duplicate decks, most modern decks are burn/gw aggro and they are 99% same, how to delete them and keep unique decks?

Sadly, in this pack it's not really possible (at least manually it'd be a major pain, and I don't have any automated means of doing that), but maybe this pack might be of use to you, which aims to do something similar to what you're asking about:

UPDATE (01/04/18): A new version of the megapacks has been uploaded. It now contains 233328 decks in the full set, 88962 decks in the AI-playable set, 119843 in the "limited" AI-playable set, and 2584 unsupported / partially supported decks. Enjoy!

UPDATE (04/09/18): A new version of the megapacks has been uploaded. It now contains 246393 decks in the full set, 92947 decks in the AI-playable set, 125746 decks in the "limited" AI-playable set, and 2812 unsupported / partially supported decks. Enjoy!

UPDATE (07/22/18): A new version of the megapacks has been uploaded. It now contains 260876 decks in the full set, 97739 decks in the AI-playable set, 132494 decks in the "limited" AI-playable set, and 3095 unsupported / partially supported decks. Enjoy!

UPDATE (10/16/18): A new version of the megapacks has been uploaded. It now contains 272257 decks in the full set, 101476 decks in the AI-playable set, 137810 decks in the "limited" AI-playable set, and 3340 unsupported / partially supported decks. Enjoy!

Smollett wrote:Please help me how to import all this into FORGE. What would all this be like you. By folders. I can only put everything in custom user decks. One big list. It is not comfortable.

Unfortunately, currently Forge isn't really designed to handle all of the decks from this megapack at once in an effective manner - if you import all of them at once, Forge will probably load for a very long time and you'll have trouble finding decks in the interface, as you observed. Sadly, the only way around it that I know is to install decks in smaller chunks, only the ones you need at the moment, hopefully that should be possible since the decks in this megapack are sorted by format and then by set, making it somewhat easier to find the decks you may want in Forge at a certain given moment.

UPDATE (04/25/19): A new version of the megapacks has been uploaded. It now contains 295081 decks in the full set, 110189 decks in the AI-playable set, 148094 decks in the "limited" AI-playable set, and 3739 unsupported / partially supported decks. Enjoy!

UPDATE (06/15/19): A new version of the megapacks has been uploaded. It now contains 303639 decks in the full set, 128240 decks in the AI-playable set, 161623 decks in the "limited" AI-playable set, and 2820 unsupported / partially supported decks. Enjoy!

Please note that all the megapacks have been fully updated against Forge v1.6.26, which led to the reduction in the number of unsupported decks and the increase in the number of AI-playable decks.